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BUG: StringDtype objects from pandas <2.3.0 cannot be reliably unpickled in 2.3.0.

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61763 In pandas-dev/pandas;

· Liam3851 opened on Jul 2, 2025

BUG:

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

PDEP missing valuesIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprintIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint

Status: Open.

#61758 In pandas-dev/pandas;

· abhmul opened on Jul 2, 2025

PERF: Arrow dtypes are much slower than Numpy for DataFrame.apply

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Arrowpyarrow functionalitypyarrow functionality

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#61747 In pandas-dev/pandas;

· ehsantn opened on Jun 30, 2025

CLN: references/tests for item_cache

Status: Open.

#61746 In pandas-dev/pandas;

· jbrockmendel opened on Jun 30, 2025

CI Failures due to new scipy and new numpydoc

CIContinuous IntegrationContinuous Integration

Status: Open.

#61740 In pandas-dev/pandas;

· Dr-Irv opened on Jun 29, 2025

Removal of members from pandas-triage team

Status: Open.

#61734 In pandas-dev/pandas;

· Dr-Irv opened on Jun 29, 2025

BUG: <code>read_csv()</code> : inconsistent dtype and content parsing.

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61730 In pandas-dev/pandas;

· 945fc41467 opened on Jun 28, 2025

DOC: https://pandas.pydata.org/pandas-docs/version/2.3 does not work

Docs

Webpandas websitepandas website

Status: Open.

#61721 In pandas-dev/pandas;

· gaborbernat opened on Jun 27, 2025

BUG: mapping categorical with single category to boolean returns category instead of bool dtype

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

CategoricalCategorical Data TypeCategorical Data Type

Status: Open.

#61719 In pandas-dev/pandas;

· kdebrab opened on Jun 27, 2025

BUG: doing df.to_parquet and then reading it with pd.read_parquet causes KeyError

Bug

IO Parquetparquet, featherparquet, feather

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61714 In pandas-dev/pandas;

· elbg opened on Jun 26, 2025

BUG: Inconsitent behaviour for different backends due to nullable bool values

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

PDEP missing valuesIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprintIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint

Status: Open.

#61713 In pandas-dev/pandas;

· SSchleehauf opened on Jun 26, 2025

BUG: .round causes TypeError / NaN-

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61712 In pandas-dev/pandas;

· SSchleehauf opened on Jun 26, 2025